The insulation is loose laid onto the decking.
Roof ballast rock.
Medium mixed color decorative rock.
Ballast stone can crush the underlying insulation creating weak spots in the roof membrane.
Stone ballast typically requires crushed graded stone placed over a stone filter sheet rolled out over the insulation.
The stone ballast on a ballasted roof system is the only thing holding the roof system in place.
Needed at perimeters and at large penetrations.
Single ply roofing materials aren t self adhered nor are they sealed together in any way.
It is however ballasted generally with gravel.
Conventional gravel ballasted roofs have been built for many years and are suitable on most flat roofs and structures.
Contact hydrotech for specific installation guidelines.
It can be applied on any building that can accommodate the extra load of the ballast and where the roof slope does not exceed 10.
0 0 a m 5.
A ballasted roof means that the roof membrane is not anchored or adhered in any way to the decking material.
Ballast is commonly used with roofs made of tar and gravel roof alternatives including ethylene propylene diene monomer epdm polyvinyl chloride pvc and thermoplastic polyolefin tpo single ply flat roofs.
Click here to edit text.
A1 grit ballast is a natural smooth water worn and screened large gravel used for many applications.
Our process as opposed to traditional forms of removing ballast reduces intense labor portions as well as minimizes risk of damaging roofs with shovels wheelbarrows.
Business hours monday thursday 7 00am 6 00 p m f r i d ay 7.
2 1 2 8 unwashed rock.
Large mixed color decorative rock.
Stone ballast is no longer allowed by many building codes.
The firestone epdm ballasted system is an economical epdm roofing system suitable for a wide variety of buildings.
When the concept first came to the u s plenty of roofers scratched their heads and wondered how the roof stayed on without being anchored especially during high winds or storms.
Unwashed landscaping decorative drainage and roof ballast stone.
In windy areas ballast stone can actually blow off the roof creating projectiles below.
Next the membrane is rolled over the insulation 2.
In the field of the roof a minimum of 10 lbs s f.
Ballast is required with 20 lbs s f.
Ballast river rock removal ballast vacuuming services will remove all river rock from single ply roofs.
White ballast can range in size from 2 1 2 3 4 inches and can be made to meet various astm standards.
Over time the stones move around creating bald spots where the system isn t held down at all.
In gravel ballasted roofing systems the waterproofing membrane is covered and ballasted against wind uplift and other exposures with a layer of gravel.
